claude-agent-sdk
<essential_principles>
Claude Agent SDK Overview
The Claude Agent SDK gives agents the same tools that power Claude Code: file operations, bash commands, web search, and more. Build autonomous agents that read files, run commands, search the web, edit code, and verify their work.
Two Ways to Query
| Function | Session | Best For |
|---|---|---|
query() |
New each time | One-off tasks, automation |
ClaudeSDKClient |
Continuous | Conversations, follow-ups, hooks |
Key Difference: query() is simpler but doesn't support hooks, interrupts, or
custom tools. Use ClaudeSDKClient for advanced features.
Agent Loop Pattern
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